Lady Liberty standing in front of waving American flag above a group of US Navy gunners that are 'Manning Battle Stations!'The Fourth Liberty Loan Campaign (September 28 thorugh October 19, 1918) was the most successful of the loan drives - remarkable in the difficulties it had to overcome: overtures of peace from the German government and a nationwide influenza epidemic that prevented public gatherings. Christie's figure urges the public to buy the bonds that will build the ships needed to keep the sea lanes open.